. there are new on one u.s. ally may be about to launch a ground attack on another and that coul have major implications on the fight against isis. our chief national security correspondent reports tonight from the pentagon. this is not the turkey the u.s. security leaders hope to b talking about on the eve of thanksgiving. as we speak, it need to ally turkey says it plans to carry out massive ground the kurdish groups that the u.s. military has partnered with and relied o to fight isis in northeast syria . the when they used for safet will become their break spread. in an exclusive interview with fox news moments ago, the top general for the kurdish led syrian defense forces said his forces, the sdf would no longer be able to help the u.s. fight